Capacity Management Service Edge-Fiber Node Management

Capacity ManagementService

Edge-Fiber Node Management

November 2013

DTI Expertise for end-to-end success

Agenda• Introductions

• Edge-Fiber Node Capacity Management Practices and Challenges

• Overview of Methodology, Data Inputs being utilized, and their inherent deficiencies

• Description of Various development efforts

• Discussion around R&D effort and findings

• Q & A

• Next Steps


What is needed in Capacity Planning

• A better, faster, more efficient way to handle your HSD Capacity Engineering

• Get it right the first time

• Engineer your network faster

• Engineer your network more effectively

• More efficient utilization of existing resources


Leverage tools and expertise

• MSO are utilizing tools that allow for better:• Hardware Utilization – Level Load your CMTS

• Manpower Effectiveness – Augment once

• Provide reports/data for more effective planning for the HSD Network – Know what will happen when

• Automate the Mundane Tasks


Edge-Fiber Node Management Challenges

• Basic Practices–NCP Creation is Based on Nodal Modem Counts (Auspice)

–Time Consuming, tedious, often obsolete before its implemented

–Fundamental flaw, node and port splits are based on Modem counts and not actual usage


Edge-Fiber Node Management Challenges • Problems With Today’s Basic Practices

–NCP Creation is Based on Nodal Modem Counts (Auspice)– Users/modems do not operate on the basic law of averages but rather at best case resembles a Log Normal Distribution or, most likely behave

more in line with a Power Law probability distribution pattern

–Time Consuming, tedious, often obsolete before its implemented– When splitting nodes there is no way to determine nodal contribution to port utilization

– Prone to human error, large spreadsheets lots of room for mistakes

–Fundamental flaw, node and port splits are based on Modem counts and not actual usage


Port Utilization vs. Modem Counts

• DS Port # 2 (bar 3) illustrates that DS Port Utilization is not necessarily proportional to Modem Counts. • Comparing DS Ports #0 (bar 1) and #1 (bar 2) illustrates that growth and the magnitude of weekly

variations in DS Port Utilization are also not necessarily proportional to Modem Counts.• This data is straight from the NCP and Weekly Capacity Utilization Reports.


What does Port Utilization Forecasting Mean


Actual Results: CMTS Port Utilization

UTallest = 74%

UTallest = 45%

Customer’s Initial NCP

Customer’s Next NCP

DTI’s Optimization of the Customer’s Initial NCP using the Customer’s initial number of DS Ports

• The same amount of CMTS hardware is used in the middle and bottom charts, but the bottom NCP would last more than 5.8 times longer.


Comparison of DS Port Loading (Top) Customer’s Initial NCP (Middle) Customer’s Next NCP(Bottom) DTI’s Optimization of the Customer’s Initial NCP (using Customer’s Initial NCP’s 6 DS Ports)

UTallest = 74%

UTallest = 57%

Customer’s Initial NCP

Customer’s Next NCP

DTI’s Optimization of the Customer’s Initial NCP using the Customer’s initial number of DS Ports


The Win• Improve Customer Satisfaction

• Less often augmentations less down time for your customers• Better balanced CMTS and edge elements results in less over-utilized ports offering

better throughput to your customers

• Reduce Engineering/Field Cycles• Turnaround of NCP Designs in 1-2 days from 3-5 days• Extending the time between augmentations

• Targeting Hardware Utilization• More efficiently engineered CMTS and edge systems. • Develop NCPs that more equally distribute utilization across all ports, lowering the

number of underutilized resources/ports

• Supports field standardization


Capacity Management Service Edge-Fiber Node Management

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